Shenzhen Das Intellitech Co., Ltd. provides intelligent building and energy management solutions in China. The company offers central air-conditioning energy management systems; central air-conditioning energy saving control systems; C3 card systems; and smart home products, access control products and accessories, and consumer and attendance products. It also offers energy monitoring and management platform for urban buildings; metro integrated monitoring software system for rail transit lines; and community integrated management platform. The company was founded in 1995 and is headquartered in Shenzhen, China.